Lippert 333963 RV and Trailer Axle Grease Seal 5200LB - 8000LB 2.25" ID (10 pack) Lippert Components double lip grease seals form a protective barrier between the axle hub and the outside elements Double lip grease seals do a better job at keeping dirt, grime and water from infiltrating the axle grease Lippert Components double lip grease seals protect the axle hub grease from dirt and water infiltration 10 double lip grease seals per package 5,200, 6,000, 7,000 and 8,000-pound axle capacities